Alabm-clock



1. F` MASCHER.

Clock.

Patented Feb. 8, 1859.

JNO. F. MASCHER, OF PHILADELPHIA, PENNSYLVANIA.

ALARM-CLOCK.

Specification of Letters Patent No. 22,883, dated February 8, 1859.

To all whom it may concern:

Be it known that I, JOHN F. Miisorrnn, orn the city ot Philadelphia andState ot Pennsylvania, have invented a neu7 and'usetul Improvement inClocksVhereby rlhey May be llviade to Strike at any Desired nterval otTime; and I do hereby declare that the following` is a full, clear, andexact description ot the same, reference being had to the annexeddrawings, making a part oit this specilication. in Which- Figure l, is a:t'ront vieuv ot' my improvet clock. Fig. 2, is a side vieuv ot thesame. F ig. 3, is a front view ot' the several parts added to anordinary clock by ine.

My invention consists in applying a ratchet or other shaped pinion orWheel A to the arbor of one of the Wheels ot the going part of a clockas herein shoivn to the arbor of the third Wheel, one pivot ot saidarbor having,l its bearing in a slotted shaped hole B, in the trame.;said pinion t meshing into the rack C having' its center ot motion at D.

A sp ing secured to the clock trarne is used tor the purpose otthrowing` the rack back against the snail F Whenever Ythe pinion A isdisengaged from the teeth ot the rack C, by means ot the lever Gf, andthrough the instrumentality ot the striking,` part of the clock, one endot said lever being pressed aside by each pin in the pin or strike WheelK, of the clock as said ivheel rotates, the other end of the leverlifting the arbor ot Wheel A out of place by means of the motionimparted to the lever by the pin Wheel ot the striking part of tieclock.

The rack C is used in part Jfor the purpose of unlocking the strikingpart ot the clock, through the instrumentality of a detent lever H, andit also in conjunction vvith the pinion A and snail F serves to dividethe hour or any portion of time into minutes, and it required halt orquarter minutes, a spring l secured to the traine serves to keep thepitching ot the pinion A and rack C engaged during such times that theclock is not striking'.

The brass hand J is secured to the sleeve ot the snail and is used tochange the time ot striking, the tigures upon an ordinary clock dialserving an index for that purpose, the hub ot the snail is a tube,fitting' spring' tight upon a tube securely fastened to the traine. theaxis ot the snail, minute and hour hands ot the clocks are concent c, asthe hand is moved from one ig'ure upon the dial to the other acorresponding i l is presented to the legl step i ot' the snail of therack, the highest step in this case corresponds to one minute and theloivest to ten minutes, but prefer twenty-tour steps or divisions uponthe snail to correspond Awith from one-halt to twelve minutes so thatthe clock is capable to strike either one or twenty-tour times pertvvelve minutes.

The rack in the case under consideration unlocks the strikingpart bydirect action, but in some cases it may be desirable to do that duty bj:recoil acti The cio-cl; so constructed is designed to be used for thepurpose of timing and startpxseugfer railroad cars. oinnibuses.I andother vehicles, which require to be started at regular and irregularintervals ot time, and also for timing,l the exposure ot' daerreotypcand other photographic pictures. ffc.

do not claim either the rack, snail separately, but

l claim- The application ot the rack pinion and snail in the manner setforth to the going partot` a clock or Watch tor the use and purposedescribed.

JOHN F. MSCHFR.

pinion or Witnesses XVM. F. Cnrrns, JOHN APPLE.

